Lotte World Tower

Lotte World Tower(Korean: 롯데월드타워) is a 556-metre (1,824 ft), 123-story skyscraper located in Seoul, South Korea. It opened to the public on April 11, 2017, and is currently the tallest building in South Korea and the fifth tallest in the world.

Lotte World Tower
롯데월드타워
Lotte World Tower in 2019
Former namesTwo Lotte World Tower
Lotte World Premium Tower
Alternative names롯데월드타워, Lotte Jamsil Super Tower, Lotte World Premium Tower
General information
StatusCompleted
TypeOffice, Hotel, Residential, retail
LocationSeoul, South Korea
Coordinates37°30′45″N 127°06′10″E
GroundbreakingMay 2009[1]
Construction startedFebruary 1, 2011
CompletedDecember 22, 2016
OpeningApril 3, 2017
Height
Tip556 m (1,824 ft)
Top floor498 m (1,634 ft)
Technical details
Floor count123 above ground, 6 below ground
Floor area304,081 m2 (3,273,100 sq ft)
Design and construction
ArchitectKohn Pedersen Fox
DeveloperLotte Engineering & Construction
Structural engineerLeslie E. Robertson Associates[2]
Website
www.lwt.co.kr

History

After 13 years of planning and site preparation,[3] the tower gained final approval to start construction by the government in November 2010[3] and the first groundbreaking activities of piling and frame assembly were observed at the construction site in March.

On New Year 2016, the LED-pixels of the facade displayed the number "2016".[4]

On April 2nd, 2017, Lotte shot off fireworks to celebrate the tower's official opening.[5] On January 1st, 2018, Lotte shot off fireworks with a LED laser show for 7 minutes to celebrate New Year's Day and the 2018 PyeongChang Winter Olympics.

Building

Design

The first design was made in the year 1990, and changed further in 1994, 1995 and 1997. Following the revision of the bird's eye view from 2004 to 2006, the bird's eye view was changed seven times in 2008 and the design was changed in 2009 and the Lotte World Tower began to break ground.[6]

The Shard of England is said to be similar in design. The building, designed by renowned Italian architect Renzo Piano, was launched in 2008, completed in 2012 and opened in 2013.

Height

On March 17th, 2016, before the final phase of external construction, the Diagrid lantern-shaped roof structure was completed. The roof structure was constructed with steel counterparts that are each 12 meters and weigh 20 tons. The counterparts were made up of bent metal panels that are 6 cm thick. The structure itself is 120 meters high, and covers floors 107–123. Approximately 3,000 tons of steel parts, a high-precision 64t tower crane and GPS alignment systems, as well as highly skilled welding technicians were used in the construction of the roof. The roof structure is engineered to withstand its weight without reinforcing pillars, endure earthquakes up to a magnitude of 9 under the Richter magnitude scale and winds up to 80 m/s.[7]

Characteristics

Landmark

Lotte World Tower is a landmark in Seoul. It is the first 100-story building in Korea. When it was completed, it was the fourth-highest tower in the world and the highest in the OECD countries. The conceptual design calls for a slender cone with convex, gently curved sides. An exterior of pale-coloured glass draws inspiration from Korean ceramics and features accents of metal filigree.[8]

Floor plans

Main facilities

Seoul Sky is located on the 117th - 123rd floors. The 117th floor is the entrance floor and the view floor; the 118th floor has the Sky Friendly Cafe and Sky Terrace. The Photozone is located on the 119th floor, Seoul Sky Cafe on the 122nd floor, and the 123 lounge, a premium lounge bar, on the 123rd floor. There are four media stands on the 117th and 118th floors. The view floor has prominent views of the city, as well as a glass floor and a telescope. The sky skylight of Seoul Sky was the highest glass floor observatory as of the tower's completion. Lotte Tower and One World Trade Center have concluded an operation and technical service agreement.[9][10]

Floors Use
117th~123rd floor Observation deck(SEOUL SKY)
105th~114th floor Private office
76th~101st floor Lotte Hotel(SIGNIEL SEOUL)
42nd~71st floor Residence(SIGNAL)
14th~38th floor Prime office
5th~12th floor Podium
1st~2nd floor Lobby
B1~B2 Observation entrance
B3~B6 Parking lot

Incidents and Accidents

Safety issues

In 2013 and 2014, 3 construction workers died during the construction of the tower, and an executive director of Lotte's construction arm was given a suspended sentence of 8 months in prison in 2016 for his role in neglecting safety measures at the site.[11] In December 2014, the Seoul city government ordered the mall and cinema complex at the base of the tower, which opened before completion of the tower, to be closed for 5 months after water was found leaking from an internal aquarium. Independent engineers who assessed the building found that these issues bore little relation to the overall structural integrity of the building and the mall and cinema complex reopened in 2015.[12]

Urban exploration

In 2016, two Russian and Ukrainian urban explorers, Vadim Makhorov and Vitaly Raskalov from Ontheroofs, illegally climbed the under-construction Lotte World Tower through stairs and Vitaly Raskalov then free-climbed up the crane on the tower's top.[13][14] The video was viewed over 3 million times as of September 2016 and received worldwide media attention.[15][16] Following the climb, Lotte World Tower released posters with the photos of Vitaly Raskalov and Vadim Makhorov and banned them from the building.[17][18]

  • October 2007
  • October 2011
  • April 2013
  • October 2013
  • December 2013
  • December 2013 (zoom)
  • June 2014 (Songpa District and Under Construction of Lotte World Tower)
  • July 2014 (zoom)
  • August 2015
  • September 2015
  • October 2015
  • May 2017
  • October 2017
  • April 2019
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See also

References
  1. "Lotte World Tower". CTBUH Skyscraper Center. Retrieved 4 August 2017.
  2. Editors. (April 20, 2016), "Korea's Tallest Tower Embodies Industrial Malaise" The Chosun Ilbo
  3. "Lotte World 2 Gains Final Approval". world.kbs.co.kr.
  4. "Das frohe Neue Jahr kann kommen! I'm südkoreanischen Seoul wurde bereits die LED-Schrift Auf dem Lotte World Premium Tower getestet." Picture of LED-lit facade tested with the vertical display of "2016" (viewed from the north). Kronen Zeitung (Print), Vienna, December 31st, 2015, p 14. (German)
  5. FOX. "WATCH: Fireworks at the grand opening of the Lotte World Tower". fox5atlanta.com. Archived from the original on 2017-04-06. Retrieved 2017-04-03.
  6. "제2롯데월드타워, 555m 위용 드러내다…최상부 첨탑 완성". 미디어펜 (in Korean). Retrieved 2019-03-29.
  7. Jung, Wooyoung. "롯데월드타워 555m 달성". Yonhap News. Retrieved March 20, 2016.
  8. http://www.skyscrapernews.com/news.php?ref=2338
  9. "Lotte World Tower - skyscraper". skyscrapercenter.com. Retrieved March 20, 2017.
  10. "555m Seoul Sky · 541m won World Trade Center". news.hankyung.com. Retrieved 2017-09-02.
  11. Herald, The Korea (2016-01-21). "Lotte executive gets suspended jail sentence in construction worker's death". www.koreaherald.com. Retrieved 2019-10-03.
  12. Sang-Hun, Choe (2015-07-14). "Lotte World Tower Rises, and Leery Koreans Watch". The New York Times. ISSN 0362-4331. Retrieved 2019-10-03.
  13. "Climbing Lotte World Tower (555 meters) youtube video". Ontheroofs. 10 April 2016.
  14. "Climbing Lotte World Tower ontheroofs story with photos and video". Ontheroofs. 10 April 2016. Archived from the original on September 21, 2016.
  15. "Daredevils evade security to climb 1,820-foot tower in South Korea". The Telegraph. 31 March 2016. Archived from the original on September 25, 2016.
  16. "[Interview] Vitaliy Raskalov on his Lotte World Tower climb". The Korea Herald. 12 April 2016. Archived from the original on September 25, 2016.
  17. "Ukrainian Daredevil Scales Seoul's Lotte World Tower". Haps Magazine. 30 March 2016. Archived from the original on September 25, 2016.
  18. "Daredevil climber beats security, tops Lotte World Tower". The Korea Times. 30 March 2016.
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